I've had my HTC S620 for about 2 years now and over the past year I've been having problems with the battery. The first incident I had occurred a year ago when I was talking on the phone and all of a sudden everything went completely dead. The battery had said full power, but the phone just died. I figured the battery had been worn out and couldn't conserve power anymore, so I went on ebay and purchased a new one. Great! The battery worked well for about 6 months, but then all of a sudden the phone just died again, even when the power bar said full. When plugged in the phone works fine, but when I talk (and now when I text) for only a few minutes it dies when unplugged.

Could this be an issue with the battery itself or is it my phone? I can't understand how a new battery could only last about 6 months and then barely function. It cost me $30 just to get a new battery shipped to me. I can't be doing that every 6 months.

If there is anyone who can provide me with any information I would truly appreciate it. Thanks!